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merge revision(s) r46416: [Backport #9942]

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* array.c (rb_ary_permutation): `p` is the array of size `r`, as
	  commented at permute0().  since `n >= r` here, buffer overflow
	  never happened, just reduce unnecessary allocation though.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@46807 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nagachika 2014-07-13 14:08:48 +00:00
parent 5c1a69452b
commit aa8380e17a
3 changed files with 8 additions and 2 deletions
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2
array.c
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@ -4818,7 +4818,7 @@ rb_ary_permutation(int argc, VALUE *argv, VALUE ary)
}
}
else { /* this is the general case */
volatile VALUE t0 = tmpbuf(n,sizeof(long));
volatile VALUE t0 = tmpbuf(r,sizeof(long));
long *p = (long*)RSTRING_PTR(t0);
volatile VALUE t1 = tmpbuf(n,sizeof(char));
char *used = (char*)RSTRING_PTR(t1);